The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2016
Filed:
Mar. 15, 2012
Tetsuya Matsuda, Hyogo, JP;
Naoki Ogawa, Hyogo, JP;
Keisuke Minami, Hyogo, JP;
Toyoki Fujihara, Hyogo, JP;
Toshiyuki Nohma, Hyogo, JP;
Tetsuya Matsuda, Hyogo, JP;
Naoki Ogawa, Hyogo, JP;
Keisuke Minami, Hyogo, JP;
Toyoki Fujihara, Hyogo, JP;
Toshiyuki Nohma, Hyogo, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
A positive electrode plate for a nonaqueous electrolyte secondary battery, the positive electrode plate including: a positive electrode substrate; a positive electrode active material layer formed on the positive electrode substrate; and a positive electrode substrate exposed portion on which the positive electrode active material layer is not formed, the positive electrode substrate exposed portion having a region that is adjacent to the positive electrode active material layer and has a protective layer formed thereon, the positive electrode active material layer and the protective layer containing polyvinylidene fluoride, and the weight average molecular weight Mw of the polyvinylidene fluoride contained in the protective layer being larger than the weight average molecular weight Mw of the polyvinylidene fluoride contained in the positive electrode active material layer. Thus, a high reliable nonaqueous electrolyte secondary battery where the widths of the positive electrode material and the protective layers are stable can be provided.